import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
//此程序读取所有的用户数据，并通过转发来跳转到initMain.jsp
@WebServlet("/main")
public class MainServet extends HttpServlet {
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        //调用UserDao中的查询所有数据方法，并把结果放到request中，转发带initMain.jsp
        UserDao userDao = new UserDao();
        request.setAttribute("userList",userDao.findAll());
        request.getRequestDispatcher("/WEB-INF/initMain.jsp").forward(request,response);

    }
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doPost(request,response);
    }
}
